components: Cleanup class/struct fwd declarations

components/browser_sync/profile_sync_components_factory_impl.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_BROWSER_SYNC_PROFILE_SYNC_COMPONENTS_FACTORY_IMPL_H__
 #define COMPONENTS_BROWSER_SYNC_PROFILE_SYNC_COMPONENTS_FACTORY_IMPL_H__
 
 #include <memory>
 #include <string>
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/macros.h"
 #include "base/memory/weak_ptr.h"
 #include "components/sync/base/model_type.h"
 #include "components/sync/driver/sync_api_component_factory.h"
 #include "components/version_info/version_info.h"
 #include "url/gurl.h"
 
 class OAuth2TokenService;
-class Profile;
 
 namespace autofill {
 class AutofillWebDataService;
 }
 
 namespace password_manager {
 class PasswordStore;
 }
 
 namespace net {
@@ skipping 92 matching lines @@
 
   // Whether to override PREFERENCES to use USS.
   static bool override_prefs_controller_to_uss_for_test_;
 
   DISALLOW_COPY_AND_ASSIGN(ProfileSyncComponentsFactoryImpl);
 };
 
 }  // namespace browser_sync
 
 #endif  // COMPONENTS_BROWSER_SYNC_PROFILE_SYNC_COMPONENTS_FACTORY_IMPL_H__